Variable air condenser



Apnl 6 9 J. J-. -JORGENSEN VARIABLE AIR CONDENSER Filed March 19 1925 2 She ets-Sheet 1 Apr 6,1926. 1,579,482

' J. J. JORGENSEN VARIABLE AIR CONDENSER Filed March 19, 1925 2 Sheets-Sheet 2 Patented Apr. 6, 1926.

earlier reins,

JESSE J. JOBGENSEN, BALBOA, CANAL ZGNE, PANAMA.

VARIABLE AIR oonnnnsnn.

Application filed March 19, 1925. Serial No. 16,809.

To aZZ whom it may concern:

Be it known that I, Jnssn J. J ORGENSEN, a citizen of the United States of America, residing at Balboa, Canal Zone, in Panama, have invented certain new and useful Improvements in Variable Air Condensers, of which the following is a specification.

This invention relates to certain new and useful improvements in variable air condensers, such as are employed in circuits of radio telegraph apparatus.

The primary object of the invention is to so construct a variable air condenser that low or substantially no dielectric absorption losses will be had.

A more particular object of the invention is to associate an active plate carrying'means of a variable air condenser with the support for such carrying means, so that low or substantially no dielectric absorption losses will be had.

A further object is to associate active plate carrying means of a variable air condenser rotor or stator, or both, with the support for such carrying means, so that low or substantially no dielectric absorption losses will be had. I carry out the above objects by providing means whereby the active plate carrying means is mounted in the support so as to substantially have only point contact with the latter.

With the above general objects in view, and others that will become apparent as the nature of the invention is better understood, the same consists in the novel form, com *ination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings and claimed.

In the drawings wherein like reference characters indicate corresponding parts throughout the several views,

'Figure 1 is a top plan view of a variable air condenser constructed in accordance with the present invention,

Figure 2 is a transverse sectional view of the device shown in Figure 1,

Figure 3 is a longitudinal section taken substantially upon line -33 of Figure 2,

Figure 4 is a rear elevational view of another form of condenser constructed in accordance with the present invention,

Figure 5 is a top plan view of the condenser shown in Figure 4,

Figure 6 is a top plan view of a still furby the capacity of ther form of condenser constructed in accordance with the present invention,

Figure 1 left rear elevational view of the device shown in F igure 6, and

F gure 8 18 a substantially central SGCLlOll of one of the end plates of the condenser shown in Figure 6, together with adjacent 1L 0 pal oS.

Reierring to Figures 1 and 2, the condensor support consists of the usual end plates 5 which are maintained in spaced parallel relation by means of spacing posts 6 that are arranged at spaced points between the margins of the end plates, the latter being secured against the ends of the posts 6 by means or screws which pass through openings in the end plates 5 and are threaded in sockets of the spacing posts 6. The usual shaft 8 1S ournaled in the end plates 5, and

mounted upon-this shaft between the end plates are the active rotor plates 9 which are maintained in spaced relation to each other by means of spacing washers 10 against which the plates are securely clamped between a spacing sleeve 11 and a clamping nut- 12. The usual compression spring 18 is interposed between a washer l4- and the nut 12 in surrounding relation to the shaft 8 for frictionally resisting turning of the-rotor so that the same will not accidentally change its'position but may be manually operated for securing adjustment of the rotor wherethe condenser is varied in the usual way. The shaft of the rotor is connected by a flexible conducting elemerit-15 with a binding post 16 in the usual way, the binding post being employed for connection with a wire of the circuit as is well known in the art. Suitable stop means may alsobe provided as indicated at 1? for limiting the rotary movement of the rotor. In this form of the invention the present improvement is only embodied in the support for the stator which comprises a plua ralit-y of spaced parallel. plates 18 alternating with and spaced from the rotor plates 9. In accordance with the present invention, he active-plates 18 of the stator are mounted upon-supporting rods 19 which are threaded throughout and upon the ends of which are adjustably threaded, pointed supporting elements 20, the supportin rods 19 passing through openings in'the plates 18 and the plates 18 being maintained in spaced relation Y the spacing sleeve 11 by means of spacing washers 21 against which the plates 18 are clamped between clamping nuts 22 threaded on-said supporting rods 19. he pointed outer ends of the supporting elements 20 engage in seats provided on the end plates 5, atively small sockets as indicated at 23 in Figure 3 or small openings formed in said end plates 5. By providing these seats, dis placement of the rotor from its proper position is prevented after the pointed supporting elements 20 have been adjusted away from each other into tight engagement with the end plates 5. It will be seen that the position of the plates 18 on the rods 19 may be adjusted before the clamping nuts 22 are finally set, after which the rotor plates may be adjusted as a unit longitudinally of the shaft 8 by threading one of the elements 20 onto the rod 19 while threading the other element 20 partially oft of the same. A line adjustment is thus had for securing proper relation between the plates 18 01": the stator and the plates 9 oi the rotor. It is to be understood that when the posts 6 are made of insulating material, the elements 20 may be of metal, although the supporting ele ments 20 may be formed of insulation to permit the use of metal posts 6. By reason of the pointed contact of the elements 20 with the end plates 5, low or substantially no dielectric absorption losses will be had.

In the form the invention shown in Figures 4 and 5, the end plates 5 are of circular form and in the nature of rings between which are mounted the stator plates 18*, said end plates 5 being carried by connecting bolts 7 a which pass through openings in the plates 5 and have nuts 23 on the ends thereof for securing the end plates 5 together. The bolts 7 also pass through the plates 18 for mounting the latter between the end plates 5 and the active plates 18 are maintained in spaced relation by means of spacing washers 21 disposed upon the bolts 7 a and against which the active plates 18 are forced by means of spacing sleeves 22 which are arranged upon the bolts 7 a between the outer ones of the plates: 18 and the end plates 5. In this form of the invention, the improvement is embodied in the supporting means of the rotor plates 9 which are carried by the usual shaft 8 said plates 9 being spaced by the washers 10 and held between and the clamping nut 12 The spring 13 is placed upon. the shaft 8 outwardly of the clamping nut 12 to resist tree rotation of the rotor so that the same will maintain any of its adjustments. Suitably secured upon the shaft 8- at the outer end of the sleeve 11 and at the outer end of the spring 13 are which are provided with radial screw threaded sockets in which are adjustably threaded stems 25 upon the outer ends of which are which seats may consist of rel hub members 2 1.

fixed the pointed supporting elements the outer pointed ends of which engage the inner peripheries of the ring like end plates 5. The pointed outer ends of the supporting elements 20" engage in seats of the end members or plates 5, which seats may be provided by the formation of internal channels or grooves in the end plates 5 as indicated at 26. It will thus be seen that the plate carrying means of the rotor has pointed contact with the support embodying the end plates 5 so that low or substantially no dielectric absorption losses are had. By adjusting the stems in the sockets of the hubs 2d the shaft 8 may be adjusted laterally for properly centering said shaft and accordingly properly associating the rotor and stator. In this form of the invention the binding post 16 is connected by the flexible conductor 15 with the shaft 8 for the usual purpose.

The construction shown in Figures 6 to S inclusive is the same as that above described with respect to Figures cept as to the manner of mounting the stator plates. The mounting of the stator plates in the form of the invention shown in Figures 6 and 7 corresponds to the manner of n'iounting the stator plates in the form the the invention shown in Figures 1 and 2 while the manner of supporting the plate carrying means or" the rotor in the form of the invention'shown in Figures 6 and 7 is similar to that employed in connection with the plate carrying means of the rotor in the form shown in Figures 4 and 5. Similar reference characters are therefore used in Figures 6 and 7 for construction and parts which correspond with construction and parts in Figures 1 and 2, while similar reference characters are employed in Figures 6 and 7 for structure and parts which correspond to structure and parts, in Figures 4 and 5. It will be seen that the invention can thus be embodied in the supporting means for both the rotor and stator plates.

In view of the similarity of such parts of the device shown in Figures (5 and 7 to parts shown in the form illustrated in Figures 1 and 2, and the similarity between other parts of said term shown in Figures 6 and 7 and parts illustrated in the form shown in Figures t and 5, it is believed that "further description of Figures 6 and 7 is unnecessary, particularly in view of the use of like reference characters for these parts.

From the foregoing description it is believed that the construction and operation as well as the advantages of the present invention will be readily understood and appreciated'by those skilled in the art.

Minor changes may be made without departing from the spirit or the scope of the invention as claimed, and it is to be underl and 5 exdenser stood that the present improvement may be incorporated not only in the type of conillustrated in the accompanying drawings, but also in any of the high conducive condensers, such as those having brass plates or those of low minimum capacity, such as the triple range type where the stator plates may be connected in series or parallel.

IV hat I claim as new is 1. In a variable air condenser, a support, active plate carrying means, and supporting elements carried by the plate carrying means for mounting the latter in the support, said supporting elements having pointed ends contacting the support, said plate carrying means being entirely free of connection or contact with the support except as provided by the contact of the pointed ends of the supporting element with said support.

2. In a variable air condenser, active plates, a support, and means including members having pointed contact with the support for mounting said plates in said support, said active plates and said means being entirely free of connection or contact with the support except as provided by the contact of the pointed ends of the members with said support.

3. In a variable aircondenser, a support, active plate carrying means, and pointed members carried by the plate carrying means and having their pointed ends engaging the support for mounting the plate carrying means in the latter, said plate carrying means and said pointed members being entirely free of connection or contact with the support except as provided by the contact of the pointed ends of said pointed members with said support.

4. In a variable air condenser, a support, active plate carrying means, and pointed members carried by the plate carrying means and having their pointed ends engaging the support for mounting the plate carrying means in the latter, said pointed members being adjustable relative to the plate carrying means for facilitating adjustment of the active plates relative to the support.

5. In a variable air condenser, a support embodying rigidly connected spaced end plates, active plate carrying means, and pointed supporting elements carried by the active plate carrying means and having their pointed ends contacting the end plates of the support.

6. In a variable air condenser, a support embodying rigidly connected spaced end plates, active plate carrying means, and pointed supporting elements carried by the active plate carrying means and having their pointed ends contacting the end plates of the support, said end plates of the support having seats for the reception of the pointed ends of the supporting elements.

7 In a variable air condenser, a support embodying rigidly connected spaced end plates, active plate carrying means, and pointed supporting elements carried by the active plate carrying means and having their pointed ends contacting the end plates of the support,.said pointed supporting elements being adjustable relative to the plate carrying means for permitting adjustment of the active plates bodily relative to the support.

8. In a condenser, a support embodying end plates rigidly connected in spaced relation, a rotor including a shaft journaled in the end plates of the support and provided with spaced active plates, and a stator carried by the support and including active plates alternating with the plates of therotor, said stator embodying plate carrying threaded rods having pointed supporting elements adjustable on the ends thereof, the pointed ends of the supporting elements contacting the end plates of the support.

In testimony whereof I afiix my signature.

JESSE J. J ORGENSEN. 

